If you’re planning on using a number of diff types of transport during your stay, then it might be worth considering the Aizu Gurutto Card. it costs 2600 yen for 2 days and includes travel on the following transportation lines:

2-Day Aizu Gurutto Card

The card gives you unlimited 2-day access to the following transportation systems within the Aizu region: JR and Aizu Railway lines, Aizu Bus, Aizuwakamatsu City Classic Town Bus (Haikara-san and Akabe), and Bandai Toto Bus.